Stefan Thomas, a German programmer living in San Francisco, is at the center of one of the most dramatic cases in the world of cryptocurrencies. He owns about 7,002 Bitcoins, equivalent to approximately R$ 1.28 billion, locked in an IronKey USB drive — a security device that allows only 10 password attempts before erasing everything forever.
The problem? Stefan has already entered the wrong password 8 times. Now, there are only two chances left before all the digital fortune is lost forever. The Bitcoins were received in 2011 as payment for an educational video, when the currency was worth about US$ 2 to US$ 30 per unit, depending on the month. At that time, the 7,002 BTC were worth only a few thousand dollars — about US$ 35 thousand.